Answer:A
Explanation:becuse they waste less heat energy
Carbon dioxide (CO2)
Argon (Ar)
Hydrogen (H)
Helium (He)
=Spectral lines are produced by transitions of electrons within atoms or ions. As the electrons move closer to or farther from the nucleus of an atom (or of an ion), energy in the form of light (or other radiation) is emitted or absorbed.…
An atom is the smallest particle of an element that can take part in a chemical reaction.
An atom is made up of energy levels that contain electrons which are negatively charged and the nucleus which contains neutrons and protons that are negatively charge .
Due the positive charge of the nucleus of an atom, an atom always want to attract its electrons and keep them near it however it weakly attracts the other electrons of a nearby atom.
Answer:
it is heterotrophic. it is unicellular. it does not have a nucleus.
Explanation:
